Anyway, I was around 15 or 16 and had always had perfect dental checkups. One day I had another routine checkup, but now suddenly I had to get nine fillings. I asked my parents to get a second opinion, but they refused and I got the fillings. In a move that would surprise absolutely nobody, that dentist sold the practice a few months later. I'm 100% confident that he was just goosing his revenue to increase the sales price, or make it a more attractive acquisition based on the revenue trend. That was around 20 years ago and I haven't had a single other dental issue beyond getting my wisdom teeth removed a few years later.
I think dental care is super important, but dentists are concerned primarily with maximizing their revenue in a way that would get most physicians' licenses revoked.